Mapping Java collections which contains super- and sub-types with JAXB

Question

I\'m trying to produce something like this with JAXB:

  
    Foo
    Bar
           


        

Answer 1

Simply modify your example to use the @XmlElementRef annotation on the identities property.

import java.util.HashSet;
import java.util.Set;

import javax.xml.bind.annotation.XmlElementRef;
import javax.xml.bind.annotation.XmlElementWrapper;
import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement(name = "person")
public class Person {
    public String firstName; 
    public String lastName;
    @XmlElementWrapper(name = "identities")
    @XmlElementRef
    public Set<Identity> identities = new HashSet<Identity>();
}